Question

A conductor suspended by two flexible wires as shown in the figure below has a mass per unit length of 0.0396 kg/m. A rectangular loop forms a circuit, and is suspended from a horizontal surface by two wires that attach to the top right and left corners of the loop. The bottom of the loop is immersed in a magnetic field vector Bin, which points into the page. The top of the loop contains a power source, the positive terminal of which is on the left.

(a) What current must exist in the conductor for the tension in the supporting wires to be zero when the magnetic field is 3.56 T into the page?

___________ A

(b) What is the required direction for the current? (We are looking for the direction of the current in the conductor.)

___________

Answer 1